Saddle for spinning frame or the like



May 20, 1958 R. RULoN-MILLER ET AL 2,834,996`

SADDLE FOR SPINNING FRAME 0R THE LIKE Filed Aug. 16, 1954 3 Sheets-Sheet1 NNN Ilm-js-Ilum/A t 54 INVENToR.

P01612; 72u /Q/l Mi//f rn er H Tab er ATTORNEYS.

May 20 1958 R. RuLoN-MILLER E-r AL 2,834,996

SADDLE FOR SPINNING FRAME 0R THE LIKE Filed Aug. 16. 1954 3 Sheets-Sheet2 22.9.8. er 95 Eff/m ATTORNEYS.

May 20, 1958 R. RuLoN-MlLLER ET Aa. 2,834,995

SADDLE FoR SPINNING FRAME 0R IHF: LIKE Filed Aug. 1e, 1954 ssheets-sheet s ATTORNEYS United States 10.Claims. (Cl. y19-135) Thepresent invention relates `to limprovements in saddle, stirrup, andbearing constructions `for spinning and roving machines.

Anfobject ofthe invention is to provide for rotatably `supportingthefronttop roll in a manner so as to elimi- Vnate the frontbearings of theusual cap bar which here- 'tofore'supported the top ro'lljand which baraccumulates dirt and frequently requires replacing because of the 4wearthereon.

Anotherobject of `the invention is to vprovide for rotatably Esupportingthe 'front top roll in a manner so as to provide 'self-alignment Iof'the top roll with its bottom roll.

Another object of the invention is toprovide `a saddle so constructedas'to beheld in operative position upon release 'or disengagement of theweight lever .and the stirrup.

A more specific object is to provide a two part saddle, the parts ofwhich are connected to each other .by alball and socket connection.

Another object of the invention is to provide a stirrup so constructedas to Vbe detachablyheld to the saddle andrequire a 180 degree swing todetach the same from the saddle.

Another object 'of the invention is to provide antifriction bearinggudgeons for the top rolls.

"With these and other objects in view, .the invention consistsof-certainnovel features of construction as will be morefully describedand particularly tpointed out Yin the appended claims.

In the accompanyingdrawings:

EFigure 1 is afragmentary vertical sectional .view ,taken between rollstands of a spinning or roving machine yof a construction embodying ourinvention;

IFigure 2 visa top plan view of the top roll assembly of the machineshown in'Figure l;

Figure 3 `is a longitudinal sectional Vview throughthe frontsaddleportion;

4Figure 4 is a longitudinal sectional -view through Vthe back saddlezportion;

rFigure Szisa front yview ofthe stirrup `shown in Figurel;

Figure 6 is a .sectional viewrtaken substantially along lnet6-6 ofFigure 4;

Figure y7 is .an .elevation partially yinsectionfof atop roll;

.Figure 8 is alongitudinal 4central sectional `viewthrough another formof .top roll;

Figure 9 ,is a sectional yview\on ,a larger scale :.of one endlportionof the roll shown inFigure 8;

Figures 10 through Vl2 are views partially in section, showing the stepsof assembling the stirrup ofFigure 5 to the saddle part shown'in Figure3;

"Figure '13 is a `-fragmentary vertical sectional view similar to Figurel butshowing the Roth long draft type systemg'and Figure '14isatragmentary-portion oftheview shown in Figure i113 but Vonan'enlarged'scale"andslrowing the saddles in section. Y

arent ice,

Figure v15 is an end View of a modified form of gudgeon such as shown inFigure 7.

Referring to the drawing for a more detailed description of theinvention, 10 designates generally a textile spinning `machine for anoperation utilizing a long draft system, as by way of example, theCasablanca typecomprising three pairs of drawing rolls which arearranged to operate successively on a strand or strands of sliver. Theserolls are respectively top and bottom .front rolls 11 and 12, lmiddlerolls 13 and 14, and back rolls 15 and 16. There is mounted andsupported on the middle rolls 13 and 14 a Casablanca unit of a commonform designated generally 17 including .a cradle which is supported on`the middle rolls and carries an upper and lower nose piece 18 and 19.An apron 20 is trained over the roll 13 and nose .piece 18. A similarapron 21 is trained over roll 14 and nose piece 19. The lower rolls 12,14 and 16 extend the entire length of the machine and are supported inroll stands 22 of .a cornmon form, which are mounted on a roller 4beam23. rlhe lower rolls are driven by suitable gearing (not shown), and theupper rolls 11, v13, and 15' merely rest=on their respective lowerrolls. The .upper rolls with the exception of roll v11 are held in theiroperative lposition by cap 'bars 24 which are mounted on a stationaryheld rod 25 for swinging movement .toward and from Ythe v.bot-

.tom rolls, .the uppervrolls having gudgeons 4journaled in the said capbars.

The weighting mechanism comprises ,a ,saddle `indicated in its entiretyby 26 which is arranged to engage the top rolls and from which there issuspended `a stirrup 27. VThe roller beam 23 carries an adjustable-fulcrurn eye 28 in which a weight lever 29 is fulcrumed The lever 29passes through and engages the stirrup 27 Aand is weighted by means of aWeight (not shown) which is suspended from .a hook 30 depending from thefree end of lever 30.

The front top roll 1.1 (best seen inFigure `2)...comprises an arbor 31on which there ismounted a.pair .of spaced cots '32. These cots are madeofa .usual nonmetallic material and are ypress fitted Vor otherwisearranged to be xed to the arbor 31 to rotate therewith. The cots.extend'substantially to the Aends of ,thetarbon in which ends there areprovided axial center openings33 which provide centers for mounting theroll on` thetusual standard bufng apparatus. There is mounted on thearbor 31 in the space defined by the innerfends of the .cots 32 a ballbearing '34 v(see Figures 1-and 3) having .an innerand outer race 35 and36, theinner race 35 being securedto thearbor for rotation therewith.The roll 111 through this `ball bearing 34 is attached .to the saddle-ina manner to be hereinafter described. In accordance with the inventionthe .saddle 26 ismadein two parts, :a front portion 37 and a backportion38, to be hereinafter referred to as front andfback saddles. Thefrontfsaddle 37 has an upstandingprojection ,39 vextending vfrom theupper side, whichis provided with a screw threadedfopening 40therethrough in `which there is adjustablyreceived thestirrup adjustingscrew `41 having a slotted head'42 and neck portion 43. The frontendportion ofthe -saddle is enlarged as Vat 44, in which there is formed arecess 45-having side walls 46. The bearing -34 is received in saidrecess 45, and a llat spring 47 secured in position by a screw 48extends to engage with the outer race '36 so as to resiliently holdfthesame in frictional engagement with the'walls of said recess to preventrotation of said-race. Thus, the arbor 31 and inner `race S15-rotaterelative to the outer race and materially reduce `friction in that thecircumferential `travel of 'the inner'race is much less than would bethe condition were the cot to rotate with the outer race 36in the usualAprior art practice. The other end portion of the saddle 37 is providedwith a longitudinal slot 49 therethrough, the walls of which are taperedas at S6.

The back saddle 38 (see Figure 4) is preferably a metal stamping whichis made channel shape in cross section providing a top wall 51 in whicha longitudinal slot 52 is provided. The marginal edges of the side walls53 (see Figure 6) are turned inwardly providing lips 54 whichfrictionally engage in corresponding grooves in a bearing block 55 whichis frictionally held between the walls 53 at one end of the saddle. Abearing block 56 `is secured in a similar manner at the other endportion of the saddle and has a hook-like formation 57 provided with anarcuate bearing surface 58. A fulcrum member 59 having an arcuate recessor ball socket 6) is adjustably secured on the side 51 as by means of ascrew 61 extending through the slot 52 and into screw threadedengagement with the member 59. Thus, the fulcrum S9 may be adjusted asto the spacing between the same and the said bearing blocks 55 and 56.The bearing blocks may be made of any suitable material, as for example,a Teflon material in which there has been incorporated ground glassparticles as described in patent application of Robert Rulon-Miller,Serial No. 306,845, now abandoned.

The back saddle 38 is positioned for the bearing 58 to engage the neckportion 62 of the top roll 15 and to extend therefrom for the bearing 55to lie on the neck portion 63 of the top roll 13. The front Saddle 37yis provided with a semi-spherical bearing or ball portion 64 which isadjustably secured in position by a llister head screw 65 which projectsthrough the slot 49 to screw thread through the bearing 64 and clamp thesame in position. The bearing 64 is engaged in the recess 60 andswivelly supports the saddle 37 to hold the roll 11 in operativeposition on the roll 12. Thus, the roll 11 is selfaligning, and thefulcrum of the saddle may be adjusted lengthwise thereof to correspondto the adjustable spacing between rolls.

The stirrup 27, as best seen in Figure 5, is a sheet meta stampinghaving a slot 66 at its lower end through which the weight lever 29extends. The upper end portion is provided with a substantially circularopening 67 therethrough in the upper wall portion of which is formed anarcuate recess 68 to engage the neck 43 of the stirrup adjusting screw41. A second and larger arcuate recess 69 is formed at the lower wallportion of opening 67 opposite to recess 68 for a purpose to appearhereinafter. In attaching the stirrup to the saddle 37 (see Figures 10,11, and 12), the opening 67 is passed over the rear portion of thesaddle which is in cross section of a size slightly less than theopening 67. The stirrup is moved along the saddle to adjacent theprojection 39 which blocks further advance of the stirrup (see FigureThe stirrup is now turned 180 degrees so as to position the recess 69opposite to the projection (see Figure 11). The recess 69 is madeslightly larger than the projection, and the stirrup may now be movedpast the projection and thereafter turned 180 degrees to position recess68 to engage the neck 43 (see Figure 12) and be suspended therefrom.

From the above description and referring to Figure l, it kwill beapparent that the back saddle 38 is hooked Iabout the neck portion ofthe rear top roll and thus held in operative position against anyforward movement thereof. It will also be apparent that the front saddle37 is connected to the back saddle 38 by a ball and socket connectionpreventing forward motion of the front roll and providing a universalconnection for aligning the roll 11 which is carried by the frontsaddle. Thus, the usual front cap bar bearings which frequently requirereplacement because of wear are eliminated in the above construction.

In Figures 13 and 14 the invention is shown applied to the Roth typelong draft system. As shown in Figure 13, the lower apron 70 runs overthe bottom roll 14 and around a nose or bar 71 and is tensionedby theroll 72 which" is held in operative position by a sheet metal bracket 73pivotally supported on the rod 74. The bar 71 extends the length of themachine and is held stationary. An upper apron 75 runs over the top roll13 and around a nose or bar 76. There is a bar 76 for each spinningunit, and it is carried by a bracket or cradle having sides 77 (seeFigure 14) which have an arcuate recess 78 which engages against theshaft of the top roll 13. The distance between the bar 76 and the recess78 is such as to tension the apron 75, which tension in turn holds thesides 77 in engagement with the shaft of the top roll 13 althoughpermitting a swinging movement about the center of the top roll 13 toand from the bar 71. There is mounted on the bar 76 a generally S-shapedmember 79 which projects upwardly in the space dened between the cots ofthe roll 13. In the present instance the bearing block 55 is omitted onthe saddle 38', and the saddle is extended to 'engage the member 79 onwhich the weight applied on the saddle 33 is transmitted.

The back saddle 38 is provided with a partial ball shaped socket 80which is intersected by a longitudinal slot 81. The front saddle 37' hasa fulcrum member 82 of semi-sphen'cal form which is adjustably securedin position as by means of a screw 83. The member 82 is also intersectedby a slot 84 and is received in the socket 80 and provides a ball andsocket connection between the saddles. The front saddle has a slot 85therethrough which is in line with slots 81 and 84. In the presentinstance the stirrup 86 extends through the said slots and is pivotallysuspended as at 87 by the front saddle`37 and hangs therefrom vto extendbetween the middle and back pairs of rolls. The lower end of the stirrup86 is provided with an adjustable hook 88 which engages the weight lever29. The remaining portions of the structure are substantially similar tothat previously described.

The invention further contemplates the provision of anti-frictiongudgeons for the top rolls 13 and 15. To this end cup-shaped gudgeons 90made of a Teflon material previously described are provided. Thegudgeons 90 (Figure 7) are received by the trunnions 91 of the roll torotate thereon and have an inner flange 92 which snaps into a recess 93in the end of the roll which has a restricted opening thereto. Thegudgeons 90 as shown have an intermediate flange 94 which is grooved asat 95 and in which groove the side walls of unit 17 are engaged.

In some instances the roll 13 may comprise a steel arbor 96 (see Figures8 and 9) on which cots 97 made of a cork or other suitable material aremounted in a usual way. The ends of the arbor 96 are reduced and areprovided with an annular ridge or flange 96. A cup-shaped gudgeon 98also made of a Teflon material has an inner annular groove 99 and isrotatably received on the reduced ends of the arbor with the annulargroove 99 engaging with the ange 96 to rotatably lock the bearing inposition. The roll 15 is likewise provided with gudgeons 98 similarlyheld to the arbor of said roll.

The gudgeons will remain stationary in the cap bars, and the roll arborwill rotate within the gudgeons. The gudgeons may have an outercylindrical surface which by reason of its greater friction in the capbars will remain stationary with relation to the cap bars, while thearbor having a smaller diameter and therefore less friction will rotatein the gudgeons. However, in some cases the gudgeons may have anon-circular outer surface, such for instance as the hexagonal outersurface 100 shown in Figure 15 adjacent Figure 7, in order that theirflat sides may engage the cap bars and positively prevent relativerotation of the gudgeons with reference to the cap bars. An advantage isobtained by this non-rotative relation of the gudgeons in that lint willnot as readily be picked up by the non-rotating gudgeons as in the casewhere the gudgeons rotate and would permit of lint wrapping about thegudgeons.

We claim:

1. In a spinning, roving, and like machines, front rolls including topand bottom rolls, pairs of rolls back of the front rolls including topand bottom rolls in each pair, guides for the ends of top rolls back ofthe front top roll to positively maintain their alignment, the saidfront top roll having an arbor and a pair of cots on said arbor spacedfrom each other, holding means for said front top roll arbor engagingthe same only in space between said cots, and means for positioning saidholding means from a positively guided top roll back of the front toproll.

2. In a spinning, roving and like machines as in claim 1, wherein theholding means comprises a bearing for rotatably engaging the arbor.

3. In a spinning, roving and like machines as in claim 1, wherein thepositioning means comprises two parts with a swivel relation betweenthem.

4. In a spinning, roving and like machines as in claim l, wherein theholding means comprises a bearing for rotatably engaging the arbor andsaid positioning means comprises two parts with a swivel relationbetween them.

5. In a spinning, roving, and like machines, front rolls including topand bottom rolls, at least two pairs of rolls back of the front rollsincluding top and bottom rolls in each pair, guides for the ends of alltop rolls back of the front rolls to positively maintain theiralignment, the said front top roll having an arbor and a pair of cots onsaid arbor spaced from each other, holding means for said front top rollarbor engaging the same only in the space between said cots, and meansfor positioning said holding means from a top roll back of the front toproll` 6. In a spinning, roving, and like machines, front rolls includingtop and bottom rolls, a plurality of pairs of rolls back of the frontrolls including top and bottom rolls in each pair, guides for the endsof all the top rolls back of the front rolls to positively maintaintheir alignment, the said front top roll having an arbor and a pair ofcots on said arbor spaced from each other, holding means engaging saidfront top roll arbor only in the space between said cots whereby saidfront top roll may align itself with its bottom roll withoutinterference from said back rolls, means to apply pressure on said rollscomprising a two part saddle, a back part engaging an arbor of a backtop roll and extending forwardly and a front part engaging said holdingmeans and extending rearwardly into over-lapping relation with the backpart.

7. In a spinning, roving and like machines, as in Claim 6, wherein thereis a ball and socket connection between said saddle parts whereby thefront part may pvotally move to assist in alignment of the top frontrol] with its bottom'roll without any roll back of it interfering withsuch alignment.

8. In a spinning, roving, and like machines as set forth in claim 7,wherein said back saddle is centrally positioned of said rolls back ofthe front rolls which are guided at their ends.

9. In a spinning, roving, and like machines, front rolls including topand bottom rolls, pairs of rolls back of the front rolls including amiddle top roll and a back top roll, guides for the ends of the middletop roll and back top roll, the said front top roll having an arbor andpairs of cots on said arbor spaced from each other, a bearing forrotatably engaging and holding said front top roll arbor only in thespace between said cots, means to apply pressure on said rollscomprising a two-part saddle, a back part engaging the back top rollarbors and extending forwardly and a front part engaging the rotarybearing for the front top roll and extending rearwardly intoover-lapping relation with the back part and a ball and socketengagement between said saddle parts whereby the front part maypivotally move to assist in alignment of the top front roll with itsbottom roll without interference from any back roll,

l0. In a spinning, roving, and like machines as set forth in claim 9,wherein said back saddle also engages the arbor of the middle top rolland means for centrally positioning said saddle on said middle top andback top rolls which are guided at their ends.

References Cited in the file of this patent UNITED STATES PATENTS783,072 Prest Feb. 2l, 1905 2,203,419 Repass et al June 4, 19402,208,803 Morton July 23, 1940 2,224,105 Repass Dec. 3, 1940 2,246,474Stahlecker June 17, 1941 2,353,338 I-Iess July 11, 1944 2,565,228Gwaltney et al Aug. 21, 1951 2,581,240 Day et al Jan. 1, 1952 2,596,3344 Hanson May 13, 1952 2,657,434 Tarbox et al Nov. 3, 1953

